member_swap.pass.cpp revision f5256e16dfc425c1d466f6308d4026d529ce9e0b 
1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <sstream>
11
12// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
13// class basic_stringstream
14
15// void swap(basic_stringstream& rhs);
16
17#include <sstream>
18#include <cassert>
19
20int main()
21{
22    {
23        std::stringstream ss0(" 123 456 ");
24        std::stringstream ss;
25        ss.swap(ss0);
26        assert(ss.rdbuf() != 0);
27        assert(ss.good());
28        assert(ss.str() == " 123 456 ");
29        int i = 0;
30        ss >> i;
31        assert(i == 123);
32        ss >> i;
33        assert(i == 456);
34        ss << i << ' ' << 123;
35        assert(ss.str() == "456 1236 ");
36        ss0 << i << ' ' << 123;
37        assert(ss0.str() == "456 123");
38    }
39    {
40        std::wstringstream ss0(L" 123 456 ");
41        std::wstringstream ss;
42        ss.swap(ss0);
43        assert(ss.rdbuf() != 0);
44        assert(ss.good());
45        assert(ss.str() == L" 123 456 ");
46        int i = 0;
47        ss >> i;
48        assert(i == 123);
49        ss >> i;
50        assert(i == 456);
51        ss << i << ' ' << 123;
52        assert(ss.str() == L"456 1236 ");
53        ss0 << i << ' ' << 123;
54        assert(ss0.str() == L"456 123");
55    }
56}
57